Continuing work on requested changes and fixes.

Continuing work on requested changes and fixes.

Added date submitted to reg event registrant list and changed headder titles.
Fixed positioning of cancel button for edit event notification in reg admin.
Fixed confusion with first and last dates for event on reg event dashboard.
Now displaying current month on reg event dashboard calendar when not date have been added.
Fixed submission of new reg event dates on reg event dashboard when "All Day" selected.
Fixed confusion with first and last dates attending for attendee.
More work on notifications cron processing. Now have working queries.